School of Mechanical and Aerospace Engineering, Nanyang Technological University, 50 Nanyang Avenue, 639798, Singapore.
Department of Mechanical and Aerospace Engineering, The Hong Kong University of Science and Technology, Kowloon, Hong Kong.
Adv Colloid Interface Sci. 2018 Aug;258:21-35. doi: 10.1016/j.cis.2018.07.003. Epub 2018 Jul 24.
Materials that change color in response to external stimuli can cater to diverse applications from sensing to art. If made flexible, stretchable and weavable, they may even be directly integrated with advanced technologies such as smart textiles. A new class of engineered composite based on polydiacetylene (PDA) functionalized carbon nanotubes (CNT) shows tremendous potential in this regard. While the inherent multi stimuli chromatic response of the polymer (blue to red) is retained, the underlying conducting CNTs invoke electrochromism in PDA. Further, the fiber form factor of dry-spun CNT yarns facilitate direct weaving of large scale electrochromic fabrics, where current flow and thus color change can be accurately controlled. This review summarizes the fundamental aspects of CNT yarns and PDAs, focusing especially on their interaction chemistry which results in the scientifically and commercially appealing electrochromic transition in these hybrids.
材料对外界刺激的颜色变化可以满足从传感到艺术等各种应用。如果它们变得灵活、可拉伸和可编织，甚至可能直接与智能纺织品等先进技术集成。一类基于聚二乙炔（PDA）功能化碳纳米管（CNT）的新型工程复合材料在这方面具有巨大的潜力。虽然聚合物固有的多刺激变色响应（蓝色变为红色）得以保留，但底层导电 CNT 会在 PDA 中引起电致变色。此外，干纺 CNT 纱线的纤维形式因素便于直接编织大尺寸电致变色织物，其中电流流动，从而颜色变化可以被准确控制。这篇综述总结了 CNT 纱线和 PDAs 的基本方面，特别关注它们的相互作用化学，这导致了这些混合物中具有科学和商业吸引力的电致变色转变。
